Across
- 4. evolutionary biologist that stated that all species descended from a common ancestor
- 6. mode of selection in which traits that attract more mates are promoted
- 7. organisms that can produce viable offspring
- 9. organisms that are better adapted to environment survive longer and reproduce more
- 12. best possible explanation for a phenomenon based on available data
Down
- 1. mode of selection in which the environment selects traits to help organisms survive
- 2. driving force behind selection
- 3. alteration in structure/function of an organism that increases fitness
- 5. an organism's ability to survive and reproduce in its environment
- 8. the change of a species over time, at the genetic level
- 10. mode of selection in which humans select specific traits and encourage mating
- 11. states the observable facts in a phenomenon